There is a frame house insulated with mineral wool in the outer walls. The question of what to fill the interior walls?
Mineral wool for insulation makes no sense. In terms of interior sound insulation makes sense. But exterior walls are insulated with a vapor barrier on the inside and a vapor-permeable film on the outside, so that moisture escapes outside.
But in the inner walls of the moisture will have nowhere to go if there will be mineral wool. I'm afraid it will accumulate there.
What do you use to fill the interior walls in a frame house?